http://www.michaels.com/studio-decor...M10392885.html
http://www.michaels.com/s/MichaelsUS...ctsource=PDPZ1
I have bought two of these in 24x36 and am very happy with the quality considering the price. I usually buy all high quality custom frames so I have zero tolerance for junk which I have found many of the other low priced options out there to be.
They also have several other color ways then the two I posted. They are also currently on sale for only 20 which is what I paid for them a few months back. They go off and on sale quite frequently.
One thing I will suggest about any frames from Michaels is getting them from a physical store if possible so you can inspect it and make sure it is in good shape.